Knitted jumpers are placed on penguins to prevent them swallowing toxic oil that could kill them. / Penguin Foundation

by Editors, USA TODAY

by Editors, USA TODAY

Every weekend USA TODAY takes a bite-size look in approximately 180 characters per item at the past week's top stories from around the world.

In cold blood

A court in South Africa was shown police photographs of Oscar Pistorius standing on his bloodstained prosthetic legs and wearing shorts covered in blood. Pistorius is on trial in his girlfriend's death.